Question

Two children named Peter and Wanda are playing a number game. If Peter's number z is 200 percent of Wanda's number, what is 20 percent of Wanda's number, in terms of z?


A. 10z

B. 2z

C. z/5

D. z/10

E. z/20

Answer 1

Answer:

$d) \frac{z}{10} \: is \: \: correct$

Step-by-step explanation:

$let \: wanda \: number = w\\ z = \frac{200}{100} w = 2w \\ \\ z = 2w \\ \\ w = \frac{z}{2} \\ \\ \\ \\ then \: \: 20 \: percent \: of \: wanda \: number \: = \frac{20}{100} \times w = \frac{w}{5} = \frac{z}{2 \times 5} = \frac{z}{10} . \\ \\ option \: \: \: d) \frac{z}{10} \: is \: \: correct.$